81398856

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2591}}^1$

素因数の和:2635

約数の個数: 128

約数和(自身を含む): 268738560

約数和(自身を除く): 187339704

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 17, 21, 22, 24, 28, 33, 34, 42, 44, 51, 56, 66, 68, 77, 84, 88, 102, 119, 132, 136, 154, 168, 187, 204, 231, 238, 264, 308, 357, 374, 408, 462, 476, 561, 616, 714, 748, 924, 952, 1122, 1309, 1428, 1496, 1848, 2244, 2591, 2618, 2856, 3927, 4488, 5182, 5236, 7773, 7854, 10364, 10472, 15546, 15708, 18137, 20728, 28501, 31092, 31416, 36274, 44047, 54411, 57002, 62184, 72548, 85503, 88094, 108822, 114004, 132141, 145096, 171006, 176188, 199507, 217644, 228008, 264282, 308329, 342012, 352376, 399014, 435288, 484517, 528564, 598521, 616658, 684024, 798028, 924987, 969034, 1057128, 1197042, 1233316, 1453551, 1596056, 1849974, 1938068, 2394084, 2466632, 2907102, 3391619, 3699948, 3876136, 4788168, 5814204, 6783238, 7399896, 10174857, 11628408, 13566476, 20349714, 27132952, 40699428, 81398856]

約数ペア:

[(1, 81398856), (2, 40699428), (3, 27132952), (4, 20349714), (6, 13566476), (7, 11628408), (8, 10174857), (11, 7399896), (12, 6783238), (14, 5814204), (17, 4788168), (21, 3876136), (22, 3699948), (24, 3391619), (28, 2907102), (33, 2466632), (34, 2394084), (42, 1938068), (44, 1849974), (51, 1596056), (56, 1453551), (66, 1233316), (68, 1197042), (77, 1057128), (84, 969034), (88, 924987), (102, 798028), (119, 684024), (132, 616658), (136, 598521), (154, 528564), (168, 484517), (187, 435288), (204, 399014), (231, 352376), (238, 342012), (264, 308329), (308, 264282), (357, 228008), (374, 217644), (408, 199507), (462, 176188), (476, 171006), (561, 145096), (616, 132141), (714, 114004), (748, 108822), (924, 88094), (952, 85503), (1122, 72548), (1309, 62184), (1428, 57002), (1496, 54411), (1848, 44047), (2244, 36274), (2591, 31416), (2618, 31092), (2856, 28501), (3927, 20728), (4488, 18137), (5182, 15708), (5236, 15546), (7773, 10472), (7854, 10364)]